<template>
  <div>
    <div class="search">
      <input v-model="keyWord" class="search-input" type="text" placeholder="输入城市名或拼音" />
    </div>
    <div class="search-content" ref="search" v-show="keyWord">
      <ul>
        <li class="search-item border-bottom"
          v-for="item of List" :key="item.id"
          @click="handleCityClick(item.name)"
        >
        {{item.name}}</li>
        <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
      </ul>
    </div>
  </div>

</template>

<script>
import Bscorll from 'better-scroll'
import { mapMutations } from 'vuex'
export default {
  name: 'Search',
  props: {
    allCities: Object
  },
  data () {
    return {
      keyWord: '',
      timer: null,
      List: []
    }
  },
  computed: {
    hasNoData () {
      return !this.List.length
    }
  },
  watch: {
    keyWord () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.allCities) {
          this.allCities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyWord) > -1 || value.name.indexOf(this.keyWord) > -1) {
              result.push(value)
            }
          })
        }
        this.List = result
      }, 100)
    }
  },
  mounted () {
    this.scorll = new Bscorll(this.$refs.search, {click: true})
  },
  methods: {
    handleCityClick (city) {
      // this.$store.dispatch('changCity', city) // 异步
      // this.$store.commit('changCity', city)// 同步
      this.changCity(city) // mapMutations 映射过来简写
      this.$router.push('/')
    },
    ...mapMutations(['changCity'])
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .search
    height: .72rem
    padding: 0 .1rem
    background: $bgcolor
    .search-input
      box-sizing: border-box
      width: 100%
      height: .62rem
      padding: 0 .2rem
      line-height: .62rem
      text-align: center
      border-radius: .06rem
      color: #666
  .search-content
    z-index: 1
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    background: #eee
    .search-item
      line-height: .62rem
      padding-left: .2rem
      background: #fff
      color: #666
</style>
